noun
Refers to one's great-grandfather (parent of a grandparent). The reading おおおおじ is a reduplicated form of おおじ (grandfather).
私の大祖父は明治時代に生まれました。
My great-grandfather was born in the Meiji era.
Grandfather. 大祖父 adds the prefix 大 (great) to indicate one generation further back.
Compound of 大 (great) and 祖父 (grandfather). The reading おおおおじ is a reduplication of おおじ (grandfather), with the first おお meaning 'great'.